I’ve checked, it does not seem to be a plugin clash.

I’m using this code to create the dropdown:

function FormGetGenres() {

$genres = [
12542 =>'Fantasy 001',
12543 =>'Fantasy 002',
12745 =>'Fantasy 003',
12746 =>'Fantasy 004',
12544 => 'Urban Fantasy 001',
12545 => 'Urban Fantasy 002'
];

return $genres;

}

… and in the form setup/creation, I call it in the form setup using “choices for callback” using “FormGetGenres” to pull the details in.

It shows the drop down ok, and stores the data in the DB ok (Multiple meta rows for each selected item) but when you come to update your data, it only shows 1 of your options selected even though you have selected more.

The database has more than 1 record saved as shown below:

umeta_id – user_id – meta_key – meta_value
333 – 8 – user_book_genres – 12543
334 – 8 – user_book_genres – 12545

but on your the /user/username/ page, it only shows 1 of the selected options from the DB, not 2. When editing, it only shows 1, not 2 on the profile edit page.

There is an issue with showing multiple selected details for the drop down and does not seem to be plugin related.

If I use a plugin with your plugin (UM Relational Fields plugin for example), I still get the same error. It shows dropdowns correctly, but showing selected options from the dropdown list does not work if more than 1 was selected and in the DB when updating.